This is a small little program used to execute a bad practice a clean way :-)

It will read a file on stdin and write it as decimal integers on stdout,
this is useful for embedding files in c-sources.

There are a few places where this is needed, and this is a better way than
the current practice of hand-editing the sources.

The command:

date | file2c 'const char date[] = {' ',0};'

will produce:

const char date[] = {
83,97,116,32,74,97,110,32,50,56,32,49,54,58,52,55,58,51,51,32,80,83,84,
32,49,57,57,53,10
,0};

The manual page is 2 lines longer than the source :-)

usr.bin/file2c/Makefile

@@ -0,0 +1,6 @@
+#	$Id: Makefile,v 1.3 1994/09/24 02:55:45 davidg Exp $
+
+PROG=	file2c
+MAN1=	file2c.1
+
+.include <bsd.prog.mk>

usr.bin/file2c/file2c.1

@@ -0,0 +1,48 @@
+.\"----------------------------------------------------------------------------
+.\" "THE BEER-WARE LICENSE" (Revision 42):
+.\" <phk@freebsd.org> wrote this file.  As long as you retain this notice, you
+.\" can do whatever you want with this file. If we meet some day, and you think
+.\" this stuff is worth it, you can buy me a beer in return.  Poul-Henning Kamp
+.\" ---------------------------------------------------------------------------
+.\"
+.\" $Id$
+.\"
+.Dd Jan 28, 1995
+.Dt FILE2C 1
+.Os
+.Sh NAME
+.Nm file2c
+.Nd convert file to c-source.
+.Sh SYNOPSIS
+.Nm file2c
+.Op "string"
+.Op "string"
+.Sh DESCRIPTION
+The
+.Nm file2c
+utility reads a file from stdin and writes it to stdout, converting each
+byte to its decimal representation on the fly.
+.Pp
+If the first 
+.Op string
+is present, it is printed before the data, if the second 
+.Op string 
+is present, it is printed after the data.
+.Pp
+This program is used to embedd binary or other files into C source files,
+for instance as a char[].
+.Sh EXAMPLE
+The command:
+.Bd -literal -offset indent
+date | file2c 'const char date[] = {' ',0};'
+.Ed
+.Pp
+will produce:
+.Bd -literal -offset indent
+const char date[] = {
+83,97,116,32,74,97,110,32,50,56,32,49,54,58,50,56,58,48,53,
+32,80,83,84,32,49,57,57,53,10
+,0};
+.Ed
+
+

usr.bin/file2c/file2c.c

@@ -0,0 +1,46 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <phk@login.dknet.dk> wrote this file.  As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
+ * ----------------------------------------------------------------------------
+ *
+ * $Id$
+ *
+ */
+
+#include <stdio.h>
+
+int
+main(int argc, char **argv)
+{
+    int i,j,k;
+    char s[10];
+
+    if (argc > 1)
+        printf("%s\n",argv[1]);
+    k = 0;
+    j = 0;
+    while((i = getchar()) != EOF) {
+	if(k++) {
+	    putchar(',');
+	    j++;
+	}
+	if (j > 70) {
+	    putchar('\n');
+	    j = 0;
+	}
+	printf("%d",i);
+	if (i > 99)
+	    j += 3;
+	else if (i > 9)
+	    j += 2;
+	else
+	    j++;
+    }
+    putchar('\n');
+    if (argc > 2)
+        printf("%s\n",argv[2]);
+    return 0;
+}